No doughnuts at the base of your neck? What was your neck tension? If I was you id ditch the 308 brass buy some 260 brass and definitely try a different primer...I was a huge fed primer fan for years but it seems like the fed primers ive tried over the last 1.5 -2 years have been very inconsistent. Ive switched to cci for the most part but have every other primer you can think of lol. I really dont care for remington primers but they sure tightened up the groups. I have a couple loads with H1000 and H4831 that are lasers but just under 2700fps they wont shoot to well in the wind. I just got and preped a box of nosler brass which should give me quite a bit more case capacity over the lapua so im going to go back to the H1000 and H4831 and see what happens, ill let you know.